1. fundamental rules or beliefs that guide behavior or thinking
Usage: plural of principle
2. basic laws or rules that explain how something works
Usage: scientific or technical context

Examples

• She refused to compromise her moral principles.
• The company operates on principles of honesty and fairness.
• He learned the basic principles of physics in school.
• The principles of democracy include freedom and equality.
• These principles guide our decision-making process.
• The scientific principles behind the experiment are complex.
• Our organization is built on strong ethical principles.